Lamp tube holder



FIG. 1 is a perspective view of a lamp tube holder showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a rear elevational view thereof.

The broken line showing of a lamp tube in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design of a lamp tube holder, as shown and described. 